[Incidence of various types of viral hepatitis in Poland 1988].

109 sera from patients in the early phase of acute hepatitis non-B were tested by immunoenzymatic methods for presence of serologic markers of infections with HBV, HAV and CMV. The analysis of the results showed that 14 patients were infected with HBV, 20 with HAV and 2 with CMV. The remaining 73 cases could apparently be attributed to the infection with HCV. It has been estimated that in 1988, 69.5% of hepatitis cases in Poland could have resulted from the infection with HBV, 24%--from the infection with NANB viruses and only, and only 6.5%--from the infection with HAV. These data even if representing a slight overestimate of the incidence of hepatitis due to the parenteral spread of infections agents support the postulate that measures to prevent these infections should be strengthened.